- Community Home
- >
- Networking
- >
- Legacy
- >
- Switching and Routing
- >
- MSTP instances differences
Categories
Company
Local Language
Forums
Discussions
Forums
- Data Protection and Retention
- Entry Storage Systems
- Legacy
- Midrange and Enterprise Storage
- Storage Networking
- HPE Nimble Storage
Discussions
Discussions
Discussions
Forums
Discussions
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
- BladeSystem Infrastructure and Application Solutions
- Appliance Servers
- Alpha Servers
- BackOffice Products
- Internet Products
- HPE 9000 and HPE e3000 Servers
- Networking
- Netservers
- Secure OS Software for Linux
- Server Management (Insight Manager 7)
- Windows Server 2003
- Operating System - Tru64 Unix
- ProLiant Deployment and Provisioning
- Linux-Based Community / Regional
- Microsoft System Center Integration
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Community
Resources
Forums
Blogs
- Subscribe to RSS Feed
- Mark Topic as New
- Mark Topic as Read
- Float this Topic for Current User
- Bookmark
- Subscribe
- Printer Friendly Page
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
07-10-2014 06:24 AM
07-10-2014 06:24 AM
MSTP instances differences
Hello
What is the expected behavior of a switch network with Multiple MSTP-Instances but with differences of the same instances on different switches:
Switch A
instance 1 = VLAN 1,2,3
instance 2 = VLAN 4,5,6
instance 3 = VLAN 7,8,9
Switch B
instance 1 = VLAN 1,2
instance 2 = VLAN 3,4,5,6
instance 3 = VLAN 7,8,9
Switch C
instance 1 = VLAN 1,2,3,4
instance 2 = VLAN 5,6
instance 3 = VLAN 7,8,9
Thanks for the Answers,
Greetings
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
07-10-2014 11:42 AM
07-10-2014 11:42 AM
Re: MSTP instances differences
All switches configured to use MST, exchange an MD5 digest of their VLAN->Instance mappings in their MSTP BPDU. This allows neighbouring switches to determine whether they are in the same MST region. If they are not in the same region (as you describe), then the switches see/treat each other as RSTP neighbours.
Usually, my advice would be to standardise your MST configuration and "ctrl-C ctrl-V" it everywhere - followed by an MD5 hash verification.
Regards,
Pete